4. How does the murmur of mild aortic regurgitation differ from that of severe aortic regurgitation (AR)?

A. Mild aortic regurgitation is high pitched and severe aortic regurgitation is low pitched

B. Mild aortic regurgitation is crescendo and severe aortic regurgitation is decrescendo

C. The intensity of the murmur is louder in severe aortic regurgitation

D. Severe aortic regurgitation is shorter in duration compared to mild aortic regurgitation

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